Mass, Chemical Changes, And The Periodic Table

In the subject of chemistry there are many standards, the main six standards include, mass, volume, chemical reactions, chemical changes, and physical changes and the periodic table. Mass is the weight of an object such as “3 pounds”. Volume is the amount of space an object or substance takes up, such as a 5x5x2 box takes up 50 cubic feet. The periodic table is a way to organize all the elements into a sensible organized “table”. These are all important in chemistry because without them you would have lots of trouble. One thing you would have trouble with is finding density (density = mass divided volume). A chemical reaction is the change of a substance into a new one, that also has a new chemical identity. Chemical properties are changes

Mass is also usually measured kilograms. A good example of what mass really is, is you take a bicycle and a truck. A bicycle doesn't need to have as good as brakes as the truck, because the bicycle has less mass than the truck therefore the bicycle will come to a stop faster. Mass is not the same thing as size, you could have a balloon and a heavy lead bullet while the balloon is bigger than the lead bullet it also has less mass because the bullet is heavier. Mass is important in chemistry, because without mass you wouldn't know the weight of an object or substance. Mass was first “discovered” in 1756 by Russian scientist Mikhail Lomonosov, who discovered through experiments that the previous theory (the Phlogiston Theory) was

Without the periodic table you wouldn’t know the scientific name of any compound, Mass of an object, the number of protons neutrons and electrons, or the size of an atom. There are many other things that the periodic table tells you but those are just some examples. The periodic table is organized in horizontal groups (periods), by order of increasing atomic number, which is equal to the total number of protons in the nucleus. The periodic table is also organized in vertical columns (groups), based on similar physical characteristics and chemical behavior. This arrangement was developed side by side with the atomic theory over the course of about 200 years. The first attempt to organize the periodic table was made by German chemist Johann Dobereiner. In 1817 he noticed that certain elements could be grouped together in